the solemn season of lent in vatican city is a celebration of the 85-year-old pontiff. the hottest ticket in town, benedict's final audience on february 27th, the day before he steps down. 35,000 people have already requested free tickets, says the vatican. but this extraordinary step creates an extraordinary problem. the church will now have two living popes. author george weigel is an analyst. >> he creases to be pope at 8:00 p.m. february 28th. there's never been a bishop of rome emeritus for 719 years. he will make that work because he will simply retire into the deep background and not be seen in public. >> in meeting with rome's priest last week, benedict says once he steps down he will remain hidden from the world. eventually he will live in this monastery in vatican city, physically close to the new pope but no one expects hip to be intrusive. >> the new pope may come in, seek his advice, do something quietly. >> benedict as pope has surprised many. he was labeled god's rottweiler. yet benedict showed a gentle pastoral side. and meeting with sex abuse victims du